import java.util.Scanner;public class Main{    public static void main(String [] args){        Scanner canner=new Scanner(System.in);        while(canner.hasNextLine()){            String str=new StringBuffer(canner.nextLine()).toString();                       int result= str.substring(str.lastIndexOf(" ")+1,str.length()).length();            System.out.println(result);        }    }}  我已经通过这道算法题！ https://www.nowcoder.com/questionTerminal/8c949ea5f36f422594b306a2300315da